n8 



THE DESEADO FORMATION OF PATAGONIA 



much the same throughout. In the female the snout is 

 relatively a little shorter, and in general the female skulls 

 are from 5 to 10 per cent, smaller throughout. The fol- 



Fig. 73. L. gandryi, view of case of the skull, female (L. oxyhynea) — 1/4 natural size; Tym- 

 pamic bullae broken open. 



lowing two sets of figures illustrate the comparative sizes 

 of the two sexes. 



